A modern, open-source toolkit ecosystem for EnergyPlus building energy simulation.
Website · Docs · Web Editor · Python API
idfkit gives you everything you need to model, simulate, and optimize building energy performance — from a fast Python library to a visual web editor to AI-powered automation.
| Repository | Description | |
|---|---|---|
| ⚡ | idfkit | Core Python toolkit — O(1) lookups, reference tracking, IDF + epJSON, weather, simulation |
| 🏗️ | idfkit-app | Envelop — browser-native EnergyPlus editor with visual HVAC design and 3D geometry viewer |
| 🤖 | idfkit-mcp | MCP server exposing 32 AI tools for modeling, simulation, weather, validation, and docs |
| 🧠 | idfkit-lsp | Language Server + VS Code extension for intelligent idfkit Python development |
| 📖 | idfkit-docs | Interactive EnergyPlus Input/Output reference documentation |
| 🌐 | idfkit.com | Project website and ecosystem hub |
pip install idfkitfrom idfkit import load_idf
doc = load_idf("model.idf")
zone = doc["Zone"]["Office"]
zone.name = "Open Plan Office" # all references update automatically
doc.save("updated.idf")- 4,000x faster lookups than legacy tools via O(1) indexed collections
- IDF + epJSON — read, write, and convert between both formats
- 55,000+ weather stations — search by location, download EPW/DDY files
- AI-native — MCP server with 32 tools for autonomous agent workflows
- Zero install web editor — visual HVAC design and in-browser simulation
idfkit is in beta — we'd love your feedback.